The CVX 20' that I have has a 12JE pump and a 460. The engine has about 400-450hp place diverter new Aggressor "A" impeller all in all pretty stock pump. I turn about 5100 RPM's and that puts me to about 68. My goal is to hit 75-80. I am going to do some head work and stealth manifold. Hope that helps me a little?
Jesse